Free Radical Reactions Quiz

What is a free radical?

• A stable molecule with paired electrons

• A reactive species with an unpaired electron

• A molecule with no electrons

• A stable ion with a full outer shell

What is homolytic fission?

• A process where electrons are transferred to one atom

• A process where electrons are shared equally between atoms

• A process where atoms are split into ions

• A process where electrons are removed from an atom

What does a mechanism show in an organic reaction?

• The color change of the reactants

• The movement of electrons and steps to convert reactants to products

• The temperature change during the reaction

• The pressure change during the reaction

What happens in a substitution reaction?

• Atoms are rearranged within a molecule

• One atom or group of atoms is replaced by another

• Electrons are transferred to another atom

• Molecules are split into smaller parts

What is the initiation step in a reaction?

• The step where the reaction ends

• The step where radicals are created to start the reaction

• The step where the reaction is paused

• The step where the reaction is reversed

What occurs during the propagation step?

• Radicals are destroyed

• Radicals react and new radicals are created

• The reaction is stopped

• The reaction is reversed

What happens during the termination step?

• Radicals are created

• Two radicals react to form a molecule, stopping the reaction

• The reaction is accelerated

• The reaction is reversed

What is the reaction condition for free radical substitution?

• High pressure

• UV light

• Low temperature

• High temperature

What is the overall equation for the substitution of H atoms in alkanes?

• CH₄ + Cl₂ → CH₃Cl + HCl

• CH₄ + O₂ → CO₂ + H₂O

• CH₄ + Br₂ → CH₃Br + HBr

• CH₄ + F₂ → CH₃F + HF

What role do chlorine radicals play in ozone depletion?

• They create ozone

• They catalyze the decomposition of ozone

• They have no effect on ozone

• They stabilize ozone